121614536605 has 4 divisors (see below), whose sum is σ = 145937443932. Its totient is φ = 97291629280.

The previous prime is 121614536479. The next prime is 121614536611. The reversal of 121614536605 is 506635416121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78454889604 + 43159647001 = 280098^2 + 207749^2 .

It is not a de Polignac number, because 121614536605 - 2⁹ = 121614536093 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12161453656 + ... + 12161453665.

It is an arithmetic number, because the mean of its divisors is an integer number (36484360983).

Almost surely, 2^121614536605 is an apocalyptic number.

It is an amenable number.

121614536605 is a deficient number, since it is larger than the sum of its proper divisors (24322907327).

121614536605 is an equidigital number, since it uses as much as digits as its factorization.

121614536605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24322907326.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 121614536605 in words is "one hundred twenty-one billion, six hundred fourteen million, five hundred thirty-six thousand, six hundred five".